解答例 - 実習課題2 - 11.DynaActionForm
(実習課題2)
実習課題1のWebアプリケーションを改良しなさい。
- パラメータのチェック機能を復活させること。
解答例
▼ディレクトリ構成は以下の通り
.
└─WEB-INF web.xml(実習課題1と同じ),struts-config.xml
├─classes
│ └─com
│ └─techscore
│ └─struts EncodingFilter.class(2章 実習課題2と同じ),
│ │ MessageResources.properties(5章 実習課題2と同じ)
│ └─chapter11
│ └─exercise2 InputEmployeeForm.class,OutputEmployeeAction.class
├─JSP
│ └─com
│ └─techscore
│ └─struts
│ └─chapter11
│ └─exercise2 inputEmployee.jsp,outputEmployee.jsp
├─lib strutsライブラリjarファイル
└─tld struts-html.tld,struts-nested.tld
※strutsライブラリjarファイル
struts.jar,commons-beanutils.jar,commons-collections.jar,commons-digester.jar,commons-logging.jar
/**
* InputEmployeeForm.java
* TECHSCORE Java JakartaStruts 11章 実習課題2
*
* Copyright (c) 2004 Four-Dimensional Data, Inc.
*
*/
package com.techscore.struts.chapter11.exercise2;
import org.apache.struts.action.DynaActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
import javax.servlet.http.HttpServletRequest;
public class InputEmployeeForm extends DynaActionForm{
// public void initialize(ActionMapping mapping) {
// super.initialize(mapping);
// }
public void reset(ActionMapping mapping, HttpServletRequest request){
initialize(mapping);
}
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request){
ActionErrors errors = new ActionErrors();
if ("".equals(get("name"))) {
errors.add("name", new ActionError("invalid.name"));
}
if ("".equals(get("address", 0))) {
errors.add("address", new ActionError("invalid.address"));
}
if ((((Boolean)get("existAddress2")).booleanValue()) &&
("".equals(get("address", 1)))) {
errors.add("address2", new ActionError("invalid.address2"));
}
if (((Integer)get("number")).intValue() == 0) {
errors.add("number", new ActionError("invalid.number"));
}
return errors;
}
}
/**
* OutputEmployeeAction.java
* TECHSCORE Java JakartaStruts 11章 実習課題2
*
* Copyright (c) 2004 Four-Dimensional Data, Inc.
*
*/
package com.techscore.struts.chapter11.exercise2;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class OutputEmployeeAction extends Action{
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception{
if (isCancelled(request)) {
return mapping.getInputForward();
}
return mapping.findForward("output");
}
}
<!-- inputEmployee.jsp -->
<!-- TECHSCORE Java JakartaStruts 11章 実習課題2 -->
<!-- Copyright (c) 2004 Four-Dimensional Data, Inc. -->
<%@ page contentType="text/html; charset=Windows-31J"
session="false"
pageEncoding="Windows-31J" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html"
prefix="html" %>
<html>
<head><title>TECHSCORE Java JakartaStruts 11章 実習課題2</title></head>
<body>
<h2>社員データ入力</h2>
<p>社員データを入力し、登録ボタンを押してください。</p>
<html:form action="/com/techscore/struts/chapter11/exercise2/OutputEmployee.do" method="post">
<table>
<tr><th>名前</th>
<td><html:text property="name" /></td>
<td><html:errors property="name" /></td></tr>
<tr><th>住所</th>
<td><html:text property="address[0]" /></td>
<td><html:errors property="address" /></td></tr>
<tr><th>住所2</th>
<td><html:text property="address[1]" /></td>
<td><html:errors property="address2" /></td></tr>
<tr><th>社員番号</th>
<td><html:text property="number" /></td>
<td><html:errors property="number" /></td></tr>
<tr><th>性別</th>
<td><html:radio property="gender" value="true" />男
<html:radio property="gender" value="false" />女</td>
<td></td></tr>
</table>
<p><html:checkbox property="existAddress2" value="true" />住所2あり</p>
<p><html:submit value="登録" />
<html:cancel value="キャンセル" /></p>
</html:form>
※名前、住所、社員番号は必ず入力してください。<br>
※住所2は複数登録が必要な場合のみチェックをつけて入力してください。<br>
住所2ありにチェックをつけていないと、住所2を入力していても登録されません。<br>
また、住所2ありにチェックをつけている場合は、必ず住所2へ入力が必要です。<br>
※社員番号に0だけもしくは数字以外を入力すると登録されません。<br>
</body>
</html>
<!-- outputEmployee.jsp -->
<!-- TECHSCORE Java JakartaStruts 11章 実習課題2 -->
<!-- Copyright (c) 2004 Four-Dimensional Data, Inc. -->
<%@ page contentType="text/html; charset=Windows-31J"
session="false"
pageEncoding="Windows-31J" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html"
prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-nested"
prefix="nested" %>
<html>
<head><title>TECHSCORE Java JakartaStruts 11章 実習課題2</title></head>
<body>
<h2>社員データ入力</h2>
<p>登録された社員データは以下の通りです</p>
<jsp:useBean id="inputEmployeeForm112"
class="com.techscore.struts.chapter11.exercise2.InputEmployeeForm"
scope="request" />
<table border="2">
<tr><th>氏名</th>
<td><nested:root name="inputEmployeeForm112"><nested:write scope="request" property="name" /></td></tr>
<tr><th>住所</th>
<td><nested:write scope="request" property="address[0]" /></td></tr>
<% if (((Boolean)inputEmployeeForm112.get("existAddress2")).booleanValue()) { %>
<tr><th>住所2</th>
<td><nested:write scope="request" property="address[1]" /></td></tr>
<% } %>
<tr><th>社員番号</th>
<td><nested:write scope="request" property="number" /></nested:root></td></tr>
<% if (((Boolean)inputEmployeeForm112.get("gender")).booleanValue()) { %>
<tr><th>性別</th><td>男</td></tr>
<% } else { %>
<tr><th>性別</th><td>女</td></tr>
<% } %>
</table>
<p><html:link action="/com/techscore/struts/chapter11/exercise2/InputEmployee">入力に戻る</html:link></p>
</body>
</html>
▼struts-config.xml
<?xml version="1.0" encoding="Windows-31J" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
<form-beans>
<form-bean name="inputEmployeeForm112"
type="com.techscore.struts.chapter11.exercise2.InputEmployeeForm">
<form-property name="name" type="java.lang.String" initial="" />
<form-property name="address" type="java.lang.String[]" initial="'', ''" />
<form-property name="number" type="int" initial="0" />
<form-property name="gender" type="boolean" initial="false" />
<form-property name="existAddress2" type="boolean" initial="false" />
</form-bean>
</form-beans>
<action-mappings>
<action path="/com/techscore/struts/chapter11/exercise2/InputEmployee"
forward="/WEB-INF/JSP/com/techscore/struts/chapter11/exercise2/inputEmployee.jsp" />
<action path="/com/techscore/struts/chapter11/exercise2/OutputEmployee"
type="com.techscore.struts.chapter11.exercise2.OutputEmployeeAction"
name="inputEmployeeForm112"
scope="request"
validate="true"
input="/WEB-INF/JSP/com/techscore/struts/chapter11/exercise2/inputEmployee.jsp">
<forward name="output"
path="/WEB-INF/JSP/com/techscore/struts/chapter11/exercise2/outputEmployee.jsp" />
</action>
</action-mappings>
<message-resources parameter="com.techscore.struts.MessageResources" />
</struts-config>
▼起動URLは以下の通り
WEB_ROOT/com/techscore/struts/chapter11/exercise2/InputEmployee.do
EncodingFilter.javaの参照(2章の実習課題2と同じ)
MessageResources.propertiesの参照(5章の実習課題2と同じ)
MessageResource.txtの参照(5章の実習課題2と同じ)

